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` V'I-I. R. SBAR'LE. `Drying Apparatus. No.' 239,678.

Patented April 5,1881

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UNITED STATES PATENT Ormea HENRY R. SEARLE, OF /VASHINGTON, DISTRICT OFCOLUMBIA, ASSIGNOR OF ONE-HALF TO CYRUS BUTLER, OF NEW YORK, N. Y.

DRYING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 239,678, dated April 5,1881.

Application filed January 15, 1881. (No model.)

To all whom it may concern:

Be it known that I, HENRY R. SEARLE, of Washington, District ofColumbia, have invepted certain new and useful Improvements in DryingApparatus, of which the following is a full,clear, and exactdescription, reference being had to the accompanying d rawings, and tothe letters of reference marked thereon.

My invention has special relation to that class of devices employed indrying various substances or articles; butfor the purpose ofillustrating my improved method, the sameis shown as employed inwall-paper printing. My improvement greatly economizes space, utilizingmuch that has heretofore been wasted, thereby enabling lne to reduce thecost of construction and operation oi' wall-paper factories, and greatlyincreasing the ease and` speed with which the paper may be printed; andmy improved device involves certain methods and peculiarities ofconstruction and operation, all of which Will be hereinafter irstfullydescribed, and then pointed out in the claims.

In the drawings, Figure 1 is a vertical sectional view of a portion ofone iioor or story of an apartment of a building and the drying portionof a wall-paper machine constructed in accordance with my improvements 5and Fig. 2 is a vertical sectional view of the same at line .r w of Fig.l and at right angles therewith.

Likeletters of referenceindicate corresponding parts in both thefigures.

Heretofore in printing wall-paper it has been necessary to employ alarge amount of space (usually about three hundred feet in length) atthe end of each printing-machine, to hang and carry the paper in afterpassing through theA printing-rollers, for the purpose of thoroughly andcarefully drying the same before it was in fit condition to be againprinted upon or formed into rolls and prepared for sale and shipment. Bymy improved device I am enabled to completely dry the paper in fortyfeet of space, thereby permitting the use of a much larger `number ofmachines in small compass, consequently reducing the cost of producingthe completed paper.

A is .the side wall of a building or apartment, with the perforation Afor a window.

B B are the oor-joists, located in the usual` manner. Upon the joistsare cross-pieces B B', to which the floor B2 is nailed.

B3 is the ceiling upon the under side of the iioor-josts, constructed ofthe usual lath and plaster, or of in atchedboards tightly jointed, asmay be preferred. By the use of the cross-pieces B it will be seen thatthe spaces between the joists have free communication with each other,thereby forming the space betweenthe floor and ceiling into a reservoirfor the air to be used in drying. 1f preferred, only the space betweentwo of the joists may be employed. A2 isa perforation cut through theWall upon a level with the iioorjoists, thereby giving free access forexternal air, the number ot' such perforations being as great asrequired, and the admission of air regulated in any approved manner. Iprefer to locate these perforations or openings beneath the windows, asshown, for by placing them in this position they do not in any wayweaken the supporting-Walls of the building.

In the spaces between the joists I place the steam-coils C, using asmany as are necessary to dry and heat the air admitted beneath thelicor. It is advisable to maintain this heat at a uniform temperature ofabout 700. It will therefore be seen that it is only necessary to usethe coils C in cold or damp weather, and

there is no danger from re in locating the pipes in close proximity tothe joists, iioor, and ceiling. If required, a fire-proof box may beconstructed for the coil. For convenience in reaching the coil Ctrap-doors may be placed at suitableintervals in the floor, as shown atB4.

E is a drying-box, constructed of any suitable material, of therequisiteheight, width, and length to contain the paper P as carried from theprinting-rollers in the usual manner, the same being looped over thecarrying-slats, as

regulating-slats S, hinged to a bar, H, are located in the opening,- forthe purpose of regulating the flow of air Vfrom beneath the floor. C isa4 steam-coil located over the opening in the iioor, said coil being soarranged that any desired degree of heat may be given to the airadmitted.

E is a flue or passage leading from the top the heat usually employed isso slight that shown, or run flat, as may be required. The floor isremoved beneath the drying-box, and

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of box E to the external atmosphere, and should be carried to such aheight as to rapidly carry off the heated air charged with moisture fromthe paper. When several machines are employed I locate them about acentral tlue or passage, the same serving to create the necessary draftand carry oft' the moisture from all the drying-boxes.

I am aware that reservoirs for heating air to be used in drying paperhave been heretofore employed, with ducts to convey the air to thedrying-boxes; but by the method used a free and proper circulation couldnot be maintained, rendering the device inoperative; but by my improveddevice objections of this nature are overcome, the air being admitteddry at a uniform temperature, and in suoli volume as to cause nodisturbance ofthe paper hanging therein. The air being further heated toany required degree, it not only rises rapidly through the space betweenthe hanging loops of paper, reaching all parts thereof uniformly, but byreason of the addition ot' the iiue over the drying-box it quickly makesits exit therefrom, carrying with it a large quantity of moisture andgiving place to fresh dry air.

Heretofore in printing wallpaper it has been usual to pass the paperover uncovered steam-pipes which warm the entire room where the work isperformed; but when a quantity ot' paper is heilig dried the wholeatmosphere of the room becomes charged with moisture, greatly retardin gthe drying of the paper, and requiring a very large space to completethe operation. The atmosphere is also charged with disagreeable odorsfrom the sizing and coloring-matter used, which is very unpleasant, itnot injurious to health. By the use of my improved apparatus all theseobjections are obviated, and the atmosphere of the room is rendered dryand pure. It will thus be seen that my improved device admirably answersthe various uses and purposes for which it is intended.

Having now fully described my invention, what I claim as new therein,and desire to secure by Letters Patent, is

1. In a drying apparatus, the combination, with an air-reservoir locatedbeneath the tloor and occupying the space between the joists 5 andbetween the iioor and ceiling,of a dryingbox having asupplementalheating-coil therein and a draft-flue thereabove, substantially as shownand described.

2. In a drying apparatus, the combination, with a building wherein thespaces between the joists and between the ioor and ceiling form anair-reservoir, said reservoir containing a heating device, of adrying-box communicating with said reservoir, said box having a finethereabove and a heating device located therein, substantially as shownand described.

3. In a dryingapparatus, thejoists B, crosspieces B', steam-coils C,ceiling B3, floor B2, inlet A2, slats S, rod H, steam-coil C', dryingboxE, and flue E', the whole combined and arranged to operate substantiallyas shown and described.

In testimony that I claim the foregoing I 7 have hereunto set my hand inthe presence of two witnesses.

HENRY R. SEARLE. Witnesses F. W. HANAFORD, A. M. PIERCE.

